61330573 has 4 divisors (see below), whose sum is σ = 61504668. Its totient is φ = 61156480.

The previous prime is 61330567. The next prime is 61330579. The reversal of 61330573 is 37503316.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61330567) and next prime (61330579).

It can be written as a sum of positive squares in 2 ways, for example, as 22915369 + 38415204 = 4787^2 + 6198^2 .

It is a cyclic number.

It is not a de Polignac number, because 61330573 - 2²⁵ = 27776141 is a prime.

It is a super-2 number, since 2×61330573² = 7522878369016658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61330579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86518 + ... + 87223.

It is an arithmetic number, because the mean of its divisors is an integer number (15376167).

Almost surely, 2^61330573 is an apocalyptic number.

It is an amenable number.

61330573 is a deficient number, since it is larger than the sum of its proper divisors (174095).

61330573 is a wasteful number, since it uses less digits than its factorization.

61330573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174094.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 61330573 is about 7831.3838496143. The cubic root of 61330573 is about 394.3595303618.

Adding to 61330573 its reverse (37503316), we get a palindrome (98833889).

The spelling of 61330573 in words is "sixty-one million, three hundred thirty thousand, five hundred seventy-three".